/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Indicates if the function is used on any graphs in this Blueprint
static bool IsFunctionUsed ( const [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * FunctionBlueprint, const [FName](API\Runtime\Core\UObject\FName) & FunctionName, const [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) * LocalGraphScope )